Bacteriological studies on raw milk supplied to Faisalabad city during summer months [Pakistan]
2001
Khaliq, K. | Ashfaque, M. (University of Agriculture, Faisalabad (Pakistan). Dept. of Veterinary Microbiology) | Hussain, I. | Akhtar, M.
Standard plate count of 100 milk samples collected from Faisalabad city during the months of June-August, 2000, ranged from 6.9x103 to 1.12x107. Time required for the reduction of methylene blue dye in milk samples was half hour in 26% samples, one hour in 25%, one & half hour in 27%, two hour in 9 degree a and two & half hours in 13% milk samples. Microscopic count ranged from 1.3x106 to 9x108. Presumptive test for presence of coliform organisms was positive in all the 100 milk samples. The electrical conductivity was recorded as low as 2200 micromho/cm and as high as 4500 micromho/cm. The values of coefficient of correlation of viable count with. electrical conductivity was 0.805 (P less than or equal to 0.05); methylene blue reduction test with electrical conductivity was - 0.758 (P less than or equal to 0.05). 24% of the samples fulfilled the International Standard of grade `A' raw milk (100,000 bacteria per ml of milk), but their methylene blue reduction test gave fair quality milk. An overall hygienic quality of milk supplied to Faisalabad city was very poor.
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